this adapter should be paired with 3Z1A suspension wire

There is no technical difference

Manual Reset Safety: Prevents the system from auto-cycling in a dangerous overheat condition

leading to a safety lockout

Can these gaskets be used on both steam and hot water boilers

Copeland Comfort Control (White Rodgers) F29-0193 Thermostat Guard this adapter should be pairedThe Copeland Comfort Control (White Rodgers) F29 0193 Thermostat Guard is a professional grade security solution designed to prevent unauthorized adjustment of HVAC settings in high traffic environments like commercial offices, schools, and hospitals. This beige metal thermostat guard features a robust heavy duty steel enclosure with a 22 gauge frame and an 8 gauge cover, providing superior tamper resistant protection compared to plastic alternatives.